17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 150205a904SPaul Gortmaker #include <linux/stat.h> 160cb403a2SUlf Hansson #include <linux/pm_runtime.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 254c4cb171SPhilip Rakity #include "sd_ops.h" 267ea239d9SPierre Ossman 277ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 287ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9SPierre Ossman 0, 0, 0, 0 307ea239d9SPierre Ossman }; 317ea239d9SPierre Ossman 327ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 337ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 387ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 427ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 477ea239d9SPierre Ossman ({ \ 487ea239d9SPierre Ossman const int __size = size; \ 497ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9SPierre Ossman const int __shft = (start) & 31; \ 527ea239d9SPierre Ossman u32 __res; \ 537ea239d9SPierre Ossman \ 547ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9SPierre Ossman if (__size + __shft > 32) \ 567ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9SPierre Ossman __res & __mask; \ 587ea239d9SPierre Ossman }) 597ea239d9SPierre Ossman 607ea239d9SPierre Ossman /* 617ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9SPierre Ossman */ 63bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 647ea239d9SPierre Ossman { 657ea239d9SPierre Ossman u32 *resp = card->raw_cid; 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * The selection of the format here is based upon published 697ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 707ea239d9SPierre Ossman */ 717ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 727ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 737ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 747ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 757ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 817ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 827ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 837ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 847ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 857ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 867ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 877ea239d9SPierre Ossman break; 887ea239d9SPierre Ossman 897ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 907ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 917ea239d9SPierre Ossman case 4: /* MMC v4 */ 927ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 937ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 947ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 957ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 967ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 977ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 987ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 997ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10051e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1017ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1027ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1037ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1047ea239d9SPierre Ossman break; 1057ea239d9SPierre Ossman 1067ea239d9SPierre Ossman default: 107a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1087ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 109bd766312SPierre Ossman return -EINVAL; 1107ea239d9SPierre Ossman } 111bd766312SPierre Ossman 112bd766312SPierre Ossman return 0; 1137ea239d9SPierre Ossman } 1147ea239d9SPierre Ossman 115dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 116dfe86cbaSAdrian Hunter { 117dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 118dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 119dfe86cbaSAdrian Hunter else 120dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 121dfe86cbaSAdrian Hunter 122dfe86cbaSAdrian Hunter mmc_init_erase(card); 123dfe86cbaSAdrian Hunter } 124dfe86cbaSAdrian Hunter 1257ea239d9SPierre Ossman /* 1267ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1277ea239d9SPierre Ossman */ 128bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1297ea239d9SPierre Ossman { 1307ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 131dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1327ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1337ea239d9SPierre Ossman 1347ea239d9SPierre Ossman /* 1357ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1367ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1376da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1387ea239d9SPierre Ossman */ 1396da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1406da24b78SKyungmin Park if (csd->structure == 0) { 141a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1426da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 143bd766312SPierre Ossman return -EINVAL; 1447ea239d9SPierre Ossman } 1457ea239d9SPierre Ossman 1467ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1477ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1487ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1497ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1507ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1517ea239d9SPierre Ossman 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1547ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1557ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1587ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1597ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1627ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1637ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1647ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1657ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1667ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1677ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 168bd766312SPierre Ossman 169dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 170dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 171dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 172dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 173dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 174dfe86cbaSAdrian Hunter } 175dfe86cbaSAdrian Hunter 176bd766312SPierre Ossman return 0; 1777ea239d9SPierre Ossman } 1787ea239d9SPierre Ossman 1797ea239d9SPierre Ossman /* 18008ee80ccSPhilip Rakity * Read extended CSD. 1817ea239d9SPierre Ossman */ 18208ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1837ea239d9SPierre Ossman { 1847ea239d9SPierre Ossman int err; 1857ea239d9SPierre Ossman u8 *ext_csd; 1867ea239d9SPierre Ossman 1877ea239d9SPierre Ossman BUG_ON(!card); 18808ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 18908ee80ccSPhilip Rakity 19008ee80ccSPhilip Rakity *new_ext_csd = NULL; 1917ea239d9SPierre Ossman 1927ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19317b0429dSPierre Ossman return 0; 1947ea239d9SPierre Ossman 1957ea239d9SPierre Ossman /* 1967ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1977ea239d9SPierre Ossman * raw block in mmc_card. 1987ea239d9SPierre Ossman */ 1997ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 2007ea239d9SPierre Ossman if (!ext_csd) { 201a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 202adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20317b0429dSPierre Ossman return -ENOMEM; 2047ea239d9SPierre Ossman } 2057ea239d9SPierre Ossman 2067ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20717b0429dSPierre Ossman if (err) { 20808ee80ccSPhilip Rakity kfree(ext_csd); 20908ee80ccSPhilip Rakity *new_ext_csd = NULL; 21008ee80ccSPhilip Rakity 211d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 212d08ebeddSWolfgang Muees * fail more gracefully. */ 213d08ebeddSWolfgang Muees if ((err != -EINVAL) 214d08ebeddSWolfgang Muees && (err != -ENOSYS) 215d08ebeddSWolfgang Muees && (err != -EFAULT)) 21608ee80ccSPhilip Rakity return err; 217adf66a0dSPierre Ossman 218adf66a0dSPierre Ossman /* 2197ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2207ea239d9SPierre Ossman * stored in their CSD. 2217ea239d9SPierre Ossman */ 2227ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 223a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2247ea239d9SPierre Ossman "on a possible high capacity card. " 2257ea239d9SPierre Ossman "Card will be ignored.\n", 2267ea239d9SPierre Ossman mmc_hostname(card->host)); 2277ea239d9SPierre Ossman } else { 228a3c76eb9SGirish K S pr_warning("%s: unable to read " 2297ea239d9SPierre Ossman "EXT_CSD, performance might " 2307ea239d9SPierre Ossman "suffer.\n", 2317ea239d9SPierre Ossman mmc_hostname(card->host)); 23217b0429dSPierre Ossman err = 0; 2337ea239d9SPierre Ossman } 23408ee80ccSPhilip Rakity } else 23508ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 236adf66a0dSPierre Ossman 23708ee80ccSPhilip Rakity return err; 2387ea239d9SPierre Ossman } 2397ea239d9SPierre Ossman 24096cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 24196cf5f02SSeungwon Jeon { 24296cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 24396cf5f02SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; 2445f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 24596cf5f02SSeungwon Jeon unsigned int hs_max_dtr = 0; 2462415c0efSSeungwon Jeon unsigned int avail_type = 0; 24796cf5f02SSeungwon Jeon 24896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2492415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2502415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2512415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2522415c0efSSeungwon Jeon } 2532415c0efSSeungwon Jeon 2542415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2552415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 25696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2572415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2582415c0efSSeungwon Jeon } 25996cf5f02SSeungwon Jeon 2602415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2612415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 26296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2632415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2642415c0efSSeungwon Jeon } 26596cf5f02SSeungwon Jeon 2662415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2672415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2682415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2692415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2702415c0efSSeungwon Jeon } 2712415c0efSSeungwon Jeon 2722415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2732415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 27496cf5f02SSeungwon Jeon hs_max_dtr = MMC_HS200_MAX_DTR; 2752415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2762415c0efSSeungwon Jeon } 2772415c0efSSeungwon Jeon 2782415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2792415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 2802415c0efSSeungwon Jeon hs_max_dtr = MMC_HS200_MAX_DTR; 2812415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2822415c0efSSeungwon Jeon } 28396cf5f02SSeungwon Jeon 28496cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 2852415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 28696cf5f02SSeungwon Jeon } 28796cf5f02SSeungwon Jeon 28808ee80ccSPhilip Rakity /* 28908ee80ccSPhilip Rakity * Decode extended CSD. 29008ee80ccSPhilip Rakity */ 29108ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 29208ee80ccSPhilip Rakity { 293e0c368d5SNamjae Jeon int err = 0, idx; 294e0c368d5SNamjae Jeon unsigned int part_size; 295e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 29608ee80ccSPhilip Rakity 29708ee80ccSPhilip Rakity BUG_ON(!card); 29808ee80ccSPhilip Rakity 29908ee80ccSPhilip Rakity if (!ext_csd) 30008ee80ccSPhilip Rakity return 0; 30108ee80ccSPhilip Rakity 3026da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 303f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3046da24b78SKyungmin Park if (card->csd.structure == 3) { 305f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 306a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3078fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 308f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3096da24b78SKyungmin Park err = -EINVAL; 3106da24b78SKyungmin Park goto out; 3116da24b78SKyungmin Park } 3126da24b78SKyungmin Park } 3136da24b78SKyungmin Park 3146da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 3156636bad8SYuvaraj Kumar C D if (card->ext_csd.rev > 7) { 316a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 3176da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 31800cedfa6SFlorin Malita err = -EINVAL; 31900cedfa6SFlorin Malita goto out; 320d7604d76SPierre Ossman } 321d7604d76SPierre Ossman 322f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 323f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 324f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 325f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 326b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3277ea239d9SPierre Ossman card->ext_csd.sectors = 3287ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3297ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3307ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3317ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 332fc8a0985SHanumath Prasad 333fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 334fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3357ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 336d7604d76SPierre Ossman } 33796cf5f02SSeungwon Jeon 338f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 33996cf5f02SSeungwon Jeon mmc_select_card_type(card); 3407ea239d9SPierre Ossman 341f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 342f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 343f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 344f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 345f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 346b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 347b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 348371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 349371a689fSAndrei Warkentin 350371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 351371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 352b1ebe384SJarkko Lavinen 353b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 354b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 355b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 356b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 357dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 358dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 359dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 360dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 361dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 362dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 363f4c5522bSAndrei Warkentin 364f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 365371a689fSAndrei Warkentin 366371a689fSAndrei Warkentin /* 367371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 368371a689fSAndrei Warkentin * multiples of 128K. 369371a689fSAndrei Warkentin */ 370e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 371e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 372e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 373e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 374e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 375add710eaSJohan Rudholm "boot%d", idx, true, 376add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 377e0c368d5SNamjae Jeon } 378e0c368d5SNamjae Jeon } 379b1ebe384SJarkko Lavinen } 380b1ebe384SJarkko Lavinen 381f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 382dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 383f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 384f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 385f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 386f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 387f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 388f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 389f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 390f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 391836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 392dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 393709de99dSChuanxiao Dong /* 394709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 395709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 396709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 397709de99dSChuanxiao Dong */ 398709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 399709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 400e0c368d5SNamjae Jeon hc_erase_grp_sz = 401709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 402e0c368d5SNamjae Jeon hc_wp_grp_sz = 403709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 404709de99dSChuanxiao Dong 405709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 406709de99dSChuanxiao Dong /* 407709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 408709de99dSChuanxiao Dong */ 409709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 410709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 411709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 412709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 413709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 414709de99dSChuanxiao Dong /* 415709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 416709de99dSChuanxiao Dong */ 417709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 418709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 419709de99dSChuanxiao Dong ext_csd[140]; 420709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 421709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 422709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 423709de99dSChuanxiao Dong } else { 424709de99dSChuanxiao Dong /* 425709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 426709de99dSChuanxiao Dong * device attributes. 427709de99dSChuanxiao Dong */ 428709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 429709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 430709de99dSChuanxiao Dong } 431e0c368d5SNamjae Jeon 432e0c368d5SNamjae Jeon /* 433e0c368d5SNamjae Jeon * General purpose partition feature support -- 434e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 435e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 436e0c368d5SNamjae Jeon */ 437e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 438e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 439e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 440e0c368d5SNamjae Jeon hc_erase_grp_sz = 441e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 442e0c368d5SNamjae Jeon hc_wp_grp_sz = 443e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 444e0c368d5SNamjae Jeon 445e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 446e0c368d5SNamjae Jeon } 447e0c368d5SNamjae Jeon 448e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 449e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 450e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 451e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 452e0c368d5SNamjae Jeon continue; 453e0c368d5SNamjae Jeon part_size = 454e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 455e0c368d5SNamjae Jeon << 16) + 456e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 457e0c368d5SNamjae Jeon << 8) + 458e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 459e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 460e0c368d5SNamjae Jeon hc_wp_grp_sz); 461e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 462e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 463add710eaSJohan Rudholm "gp%d", idx, false, 464add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 465e0c368d5SNamjae Jeon } 466e0c368d5SNamjae Jeon } 467dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 468dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 469dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 470dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 471dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 472dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 473dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 474dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 475add710eaSJohan Rudholm 476add710eaSJohan Rudholm /* 477add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 478add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 479add710eaSJohan Rudholm * take into account the value of boot_locked below. 480add710eaSJohan Rudholm */ 481add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 482add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 48360443712SFredrik Soderstedt 48460443712SFredrik Soderstedt /* Save power class values */ 48560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 48660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 48760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 48860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 48960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 49060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 49160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 49260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 49360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 49460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 49560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 49660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 49760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 49860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 49960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 50060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 501dfe86cbaSAdrian Hunter } 502dfe86cbaSAdrian Hunter 503b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5047c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5057c4f10acSRomain Izard if (card->cid.year < 2010) 5067c4f10acSRomain Izard card->cid.year += 16; 5077c4f10acSRomain Izard 508950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 509950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 510950d56acSJaehoon Chung card->ext_csd.bkops = 1; 511950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 512950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 513950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 514950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 515950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 516950d56acSJaehoon Chung mmc_hostname(card->host)); 517950d56acSJaehoon Chung } 518950d56acSJaehoon Chung 519eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 520eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 521eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 522eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 523eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 524eb0d8f13SJaehoon Chung else 525eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 526eb0d8f13SJaehoon Chung /* 527eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 528eb0d8f13SJaehoon Chung * a command interrupted by HPI 529eb0d8f13SJaehoon Chung */ 530eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 531eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 532eb0d8f13SJaehoon Chung } 533eb0d8f13SJaehoon Chung 534f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 535b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 536090d25feSLoic Pallardy 537090d25feSLoic Pallardy /* 538090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 539090d25feSLoic Pallardy */ 540090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 541d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 542090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 543090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 544090d25feSLoic Pallardy "rpmb", 0, false, 545090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 546090d25feSLoic Pallardy } 547b2499518SAdrian Hunter } 548f4c5522bSAndrei Warkentin 5495238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 550dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 551dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 552dfe86cbaSAdrian Hunter else 553dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 554dfe86cbaSAdrian Hunter 555336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 556bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 557336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 558336c716aSSeungwon Jeon 559b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 560b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 561bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 562bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 563b23cf0bdSSeungwon Jeon 564881d1c25SSeungwon Jeon card->ext_csd.cache_size = 565881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 566881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 567881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 568881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5694265900eSSaugata Das 5704265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5714265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5724265900eSSaugata Das else 5734265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5744265900eSSaugata Das 5754265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5764265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5774265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5784265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5794265900eSSaugata Das (card->ext_csd.data_sector_size); 5804265900eSSaugata Das } else { 5814265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5824265900eSSaugata Das } 583abd9ac14SSeungwon Jeon 584abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 585abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 586abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 587abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 588a5075eb9SSaugata Das } else { 589a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 590336c716aSSeungwon Jeon } 591881d1c25SSeungwon Jeon 5927ea239d9SPierre Ossman out: 59308ee80ccSPhilip Rakity return err; 59408ee80ccSPhilip Rakity } 5957ea239d9SPierre Ossman 59608ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 59708ee80ccSPhilip Rakity { 59808ee80ccSPhilip Rakity kfree(ext_csd); 59908ee80ccSPhilip Rakity } 60008ee80ccSPhilip Rakity 60108ee80ccSPhilip Rakity 602f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 60308ee80ccSPhilip Rakity { 60408ee80ccSPhilip Rakity u8 *bw_ext_csd; 60508ee80ccSPhilip Rakity int err; 60608ee80ccSPhilip Rakity 607f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 608f39b2dd9SPhilip Rakity return 0; 60908ee80ccSPhilip Rakity 610f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 611f39b2dd9SPhilip Rakity 612f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 61308ee80ccSPhilip Rakity err = -EINVAL; 61408ee80ccSPhilip Rakity goto out; 61508ee80ccSPhilip Rakity } 61608ee80ccSPhilip Rakity 61708ee80ccSPhilip Rakity /* only compare read only fields */ 618dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 61908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 620f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 62108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 622f39b2dd9SPhilip Rakity (card->ext_csd.rev == 62308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 624f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 62508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 626f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 62708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 628f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 62908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 630f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 63108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 632f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 63308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 634f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 63508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 636f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 63708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 638f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 63908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 640f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 64108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 642f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 64308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 644f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 645f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 646f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 647f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 648f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 649f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 650f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 65160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 65260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 65360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 65460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 65560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 65660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 65760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 65860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 65960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 66060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 66160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 66260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 66360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 66460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 66560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 66660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 66760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); 66808ee80ccSPhilip Rakity if (err) 66908ee80ccSPhilip Rakity err = -EINVAL; 67008ee80ccSPhilip Rakity 67108ee80ccSPhilip Rakity out: 67208ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6737ea239d9SPierre Ossman return err; 6747ea239d9SPierre Ossman } 6757ea239d9SPierre Ossman 67651ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 67751ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 67851ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 67951ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 68051ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 681dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 682dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 68351ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 68451ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 68551ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 68651ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 68751ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 68851e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 68951ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 690709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 691709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 692709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 693188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 694188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 69551ec92e2SPierre Ossman 69651ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 69751ec92e2SPierre Ossman &dev_attr_cid.attr, 69851ec92e2SPierre Ossman &dev_attr_csd.attr, 69951ec92e2SPierre Ossman &dev_attr_date.attr, 700dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 701dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 70251ec92e2SPierre Ossman &dev_attr_fwrev.attr, 70351ec92e2SPierre Ossman &dev_attr_hwrev.attr, 70451ec92e2SPierre Ossman &dev_attr_manfid.attr, 70551ec92e2SPierre Ossman &dev_attr_name.attr, 70651ec92e2SPierre Ossman &dev_attr_oemid.attr, 70751e7e8b6SBernie Thompson &dev_attr_prv.attr, 70851ec92e2SPierre Ossman &dev_attr_serial.attr, 709709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 710709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 711188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 712188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 71351ec92e2SPierre Ossman NULL, 71451ec92e2SPierre Ossman }; 715d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 71651ec92e2SPierre Ossman 71751ec92e2SPierre Ossman static struct device_type mmc_type = { 718d1e58212SAxel Lin .groups = mmc_std_groups, 71951ec92e2SPierre Ossman }; 72051ec92e2SPierre Ossman 7217ea239d9SPierre Ossman /* 722b87d8dbfSGirish K S * Select the PowerClass for the current bus width 723b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 724b87d8dbfSGirish K S * extended CSD register, select it by executing the 725b87d8dbfSGirish K S * mmc_switch command. 726b87d8dbfSGirish K S */ 727b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 72860443712SFredrik Soderstedt unsigned int bus_width) 729b87d8dbfSGirish K S { 730b87d8dbfSGirish K S int err = 0; 73160443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 732b87d8dbfSGirish K S struct mmc_host *host; 733b87d8dbfSGirish K S 734b87d8dbfSGirish K S BUG_ON(!card); 735b87d8dbfSGirish K S 736b87d8dbfSGirish K S host = card->host; 737b87d8dbfSGirish K S BUG_ON(!host); 738b87d8dbfSGirish K S 739b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 740b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 741b87d8dbfSGirish K S return 0; 742b87d8dbfSGirish K S 743b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 744b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 745b87d8dbfSGirish K S return 0; 746b87d8dbfSGirish K S 747b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 748b87d8dbfSGirish K S case MMC_VDD_165_195: 749b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 75060443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_26_195; 751b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 75260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 75360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 : 75460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195; 755b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 75660443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_200_195; 757b87d8dbfSGirish K S break; 75893fc5a47SSubhash Jadavani case MMC_VDD_27_28: 75993fc5a47SSubhash Jadavani case MMC_VDD_28_29: 76093fc5a47SSubhash Jadavani case MMC_VDD_29_30: 76193fc5a47SSubhash Jadavani case MMC_VDD_30_31: 76293fc5a47SSubhash Jadavani case MMC_VDD_31_32: 763b87d8dbfSGirish K S case MMC_VDD_32_33: 764b87d8dbfSGirish K S case MMC_VDD_33_34: 765b87d8dbfSGirish K S case MMC_VDD_34_35: 766b87d8dbfSGirish K S case MMC_VDD_35_36: 767b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 76860443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_26_360; 769b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 77060443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 77160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 : 77260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360; 773b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 77460443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_200_360; 775b87d8dbfSGirish K S break; 776b87d8dbfSGirish K S default: 777b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 778b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 779b87d8dbfSGirish K S return -EINVAL; 780b87d8dbfSGirish K S } 781b87d8dbfSGirish K S 782b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 783b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 784b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 785b87d8dbfSGirish K S else 786b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 787b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 788b87d8dbfSGirish K S 789b87d8dbfSGirish K S /* If the power class is different from the default value */ 790b87d8dbfSGirish K S if (pwrclass_val > 0) { 791b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 792b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 793b87d8dbfSGirish K S pwrclass_val, 79471fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 795b87d8dbfSGirish K S } 796b87d8dbfSGirish K S 797b87d8dbfSGirish K S return err; 798b87d8dbfSGirish K S } 799b87d8dbfSGirish K S 800b87d8dbfSGirish K S /* 801a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 802a4924c71SGirish K S * if bus width set without error 803a4924c71SGirish K S */ 804a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 805a4924c71SGirish K S { 80610942aa4SSeungwon Jeon int idx, err = -EINVAL; 807a4924c71SGirish K S struct mmc_host *host; 808a4924c71SGirish K S static unsigned ext_csd_bits[] = { 809a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 810a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 811a4924c71SGirish K S }; 812a4924c71SGirish K S static unsigned bus_widths[] = { 813a4924c71SGirish K S MMC_BUS_WIDTH_4, 814a4924c71SGirish K S MMC_BUS_WIDTH_8, 815a4924c71SGirish K S }; 816a4924c71SGirish K S 817a4924c71SGirish K S BUG_ON(!card); 818a4924c71SGirish K S 819a4924c71SGirish K S host = card->host; 820a4924c71SGirish K S 8212415c0efSSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 822567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 82310942aa4SSeungwon Jeon 8242415c0efSSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 825567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 826a4924c71SGirish K S 827a4924c71SGirish K S /* If fails try again during next card power cycle */ 828a4924c71SGirish K S if (err) 829a4924c71SGirish K S goto err; 830a4924c71SGirish K S 831a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 832a4924c71SGirish K S 833a4924c71SGirish K S /* 834a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 835a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 836a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 837a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 838a4924c71SGirish K S */ 839a4924c71SGirish K S for (; idx >= 0; idx--) { 840a4924c71SGirish K S 841a4924c71SGirish K S /* 842a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 843a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 844a4924c71SGirish K S * mmc switch command returns error then switch to 845a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 846a4924c71SGirish K S * bus width on the host. 847a4924c71SGirish K S */ 848a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 849a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 850a4924c71SGirish K S ext_csd_bits[idx], 851a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 852a4924c71SGirish K S if (err) 853a4924c71SGirish K S continue; 854a4924c71SGirish K S 855a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 856a4924c71SGirish K S 857a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 858a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 859a4924c71SGirish K S else 860a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 861a4924c71SGirish K S if (!err) 862a4924c71SGirish K S break; 863a4924c71SGirish K S } 864a4924c71SGirish K S 865a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 866a4924c71SGirish K S if (!err) 8674509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 86857de31f6SUlf Hansson EXT_CSD_HS_TIMING, 2, 86957de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 87057de31f6SUlf Hansson true, true, true); 871a4924c71SGirish K S err: 872a4924c71SGirish K S return err; 873a4924c71SGirish K S } 874a4924c71SGirish K S 875a4924c71SGirish K S /* 8766abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8776abaa0c9SPierre Ossman * 8788769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8796abaa0c9SPierre Ossman * we're trying to reinitialise. 8807ea239d9SPierre Ossman */ 8818c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8826abaa0c9SPierre Ossman struct mmc_card *oldcard) 8837ea239d9SPierre Ossman { 8847ea239d9SPierre Ossman struct mmc_card *card; 88525d5c699SPhilip Rakity int err, ddr = 0; 8867ea239d9SPierre Ossman u32 cid[4]; 8877ea239d9SPierre Ossman unsigned int max_dtr; 888b676f039SPhilip Rakity u32 rocr; 88908ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8907ea239d9SPierre Ossman 8917ea239d9SPierre Ossman BUG_ON(!host); 892d84075c8SPierre Ossman WARN_ON(!host->claimed); 8937ea239d9SPierre Ossman 89444669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 89544669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 89644669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 89744669034SStefan Nilsson XK 8987ea239d9SPierre Ossman /* 8997ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 9007ea239d9SPierre Ossman * need to tell some cards to go back to the idle 9017ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 9027ea239d9SPierre Ossman * respond. 903c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 9047ea239d9SPierre Ossman */ 9057ea239d9SPierre Ossman mmc_go_idle(host); 9067ea239d9SPierre Ossman 9077ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 908b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 90917b0429dSPierre Ossman if (err) 9106abaa0c9SPierre Ossman goto err; 9117ea239d9SPierre Ossman 9127ea239d9SPierre Ossman /* 913af517150SDavid Brownell * For SPI, enable CRC as appropriate. 914af517150SDavid Brownell */ 915af517150SDavid Brownell if (mmc_host_is_spi(host)) { 916af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 917af517150SDavid Brownell if (err) 918af517150SDavid Brownell goto err; 919af517150SDavid Brownell } 920af517150SDavid Brownell 921af517150SDavid Brownell /* 9227ea239d9SPierre Ossman * Fetch CID from card. 9237ea239d9SPierre Ossman */ 924af517150SDavid Brownell if (mmc_host_is_spi(host)) 925af517150SDavid Brownell err = mmc_send_cid(host, cid); 926af517150SDavid Brownell else 9277ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 92817b0429dSPierre Ossman if (err) 9297ea239d9SPierre Ossman goto err; 9307ea239d9SPierre Ossman 9316abaa0c9SPierre Ossman if (oldcard) { 932adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 933adf66a0dSPierre Ossman err = -ENOENT; 9346abaa0c9SPierre Ossman goto err; 935adf66a0dSPierre Ossman } 9366abaa0c9SPierre Ossman 9376abaa0c9SPierre Ossman card = oldcard; 9386abaa0c9SPierre Ossman } else { 9397ea239d9SPierre Ossman /* 9407ea239d9SPierre Ossman * Allocate card structure. 9417ea239d9SPierre Ossman */ 94251ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 943adf66a0dSPierre Ossman if (IS_ERR(card)) { 944adf66a0dSPierre Ossman err = PTR_ERR(card); 9457ea239d9SPierre Ossman goto err; 946adf66a0dSPierre Ossman } 9477ea239d9SPierre Ossman 94869041150SUlf Hansson card->ocr = ocr; 9497ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 9507ea239d9SPierre Ossman card->rca = 1; 9517ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9526abaa0c9SPierre Ossman } 9537ea239d9SPierre Ossman 9547ea239d9SPierre Ossman /* 955af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 9567ea239d9SPierre Ossman */ 957af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9587ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 95917b0429dSPierre Ossman if (err) 9607ea239d9SPierre Ossman goto free_card; 9617ea239d9SPierre Ossman 9627ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 963af517150SDavid Brownell } 9647ea239d9SPierre Ossman 9656abaa0c9SPierre Ossman if (!oldcard) { 9667ea239d9SPierre Ossman /* 9677ea239d9SPierre Ossman * Fetch CSD from card. 9687ea239d9SPierre Ossman */ 9697ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 97017b0429dSPierre Ossman if (err) 9717ea239d9SPierre Ossman goto free_card; 9727ea239d9SPierre Ossman 973bd766312SPierre Ossman err = mmc_decode_csd(card); 974adf66a0dSPierre Ossman if (err) 975bd766312SPierre Ossman goto free_card; 976bd766312SPierre Ossman err = mmc_decode_cid(card); 977adf66a0dSPierre Ossman if (err) 978bd766312SPierre Ossman goto free_card; 9796abaa0c9SPierre Ossman } 9807ea239d9SPierre Ossman 9817ea239d9SPierre Ossman /* 98289a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9837ea239d9SPierre Ossman */ 984af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9857ea239d9SPierre Ossman err = mmc_select_card(card); 98617b0429dSPierre Ossman if (err) 9877ea239d9SPierre Ossman goto free_card; 988af517150SDavid Brownell } 9897ea239d9SPierre Ossman 9906abaa0c9SPierre Ossman if (!oldcard) { 99189a73cf5SPierre Ossman /* 992af517150SDavid Brownell * Fetch and process extended CSD. 99389a73cf5SPierre Ossman */ 99408ee80ccSPhilip Rakity 99508ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 99608ee80ccSPhilip Rakity if (err) 99708ee80ccSPhilip Rakity goto free_card; 99808ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 99917b0429dSPierre Ossman if (err) 10007ea239d9SPierre Ossman goto free_card; 1001b676f039SPhilip Rakity 1002b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1003b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1004b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1005b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1006b676f039SPhilip Rakity */ 1007b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1008b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1009b676f039SPhilip Rakity 1010dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1011dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 10126abaa0c9SPierre Ossman } 10137ea239d9SPierre Ossman 10147ea239d9SPierre Ossman /* 1015709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1016709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1017709de99dSChuanxiao Dong */ 101883bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 101983bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1020709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1021b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1022b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1023709de99dSChuanxiao Dong 1024709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1025709de99dSChuanxiao Dong goto free_card; 1026709de99dSChuanxiao Dong 1027709de99dSChuanxiao Dong if (err) { 1028709de99dSChuanxiao Dong err = 0; 1029709de99dSChuanxiao Dong /* 1030709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1031709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1032709de99dSChuanxiao Dong * during next time reinit 1033709de99dSChuanxiao Dong */ 1034709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1035709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1036709de99dSChuanxiao Dong } else { 1037709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1038709de99dSChuanxiao Dong /* 1039709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1040709de99dSChuanxiao Dong * This will affect the erase size, so 1041709de99dSChuanxiao Dong * here need to reset erase size 1042709de99dSChuanxiao Dong */ 1043709de99dSChuanxiao Dong mmc_set_erase_size(card); 1044709de99dSChuanxiao Dong } 1045709de99dSChuanxiao Dong } 1046709de99dSChuanxiao Dong 1047709de99dSChuanxiao Dong /* 104841e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 104941e2a489SPhilip Rakity */ 1050371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1051371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1052371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1053371a689fSAndrei Warkentin card->ext_csd.part_config, 1054371a689fSAndrei Warkentin card->ext_csd.part_time); 1055371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1056371a689fSAndrei Warkentin goto free_card; 105741e2a489SPhilip Rakity } 105841e2a489SPhilip Rakity 105941e2a489SPhilip Rakity /* 106043235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1061bec8726aSGirish K S */ 106243235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1063bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1064bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1065bec8726aSGirish K S EXT_CSD_POWER_ON, 1066bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1067bec8726aSGirish K S if (err && err != -EBADMSG) 1068bec8726aSGirish K S goto free_card; 1069bec8726aSGirish K S 107096a85d54SGirish K S /* 107196a85d54SGirish K S * The err can be -EBADMSG or 0, 107296a85d54SGirish K S * so check for success and update the flag 107396a85d54SGirish K S */ 1074bec8726aSGirish K S if (!err) 1075e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 107696a85d54SGirish K S } 1077bec8726aSGirish K S 1078bec8726aSGirish K S /* 107989a73cf5SPierre Ossman * Activate high speed (if supported) 108089a73cf5SPierre Ossman */ 1081a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1082a4924c71SGirish K S err = 0; 10832415c0efSSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1084a4924c71SGirish K S err = mmc_select_hs200(card); 10852415c0efSSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 10864509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10877488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10884509f847SUlf Hansson card->ext_csd.generic_cmd6_time, 10894509f847SUlf Hansson true, true, true); 1090a4924c71SGirish K S 1091ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 109289a73cf5SPierre Ossman goto free_card; 109389a73cf5SPierre Ossman 1094ef0b27d4SAdrian Hunter if (err) { 1095a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1096ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1097ef0b27d4SAdrian Hunter err = 0; 1098ef0b27d4SAdrian Hunter } else { 10992415c0efSSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1100a4924c71SGirish K S mmc_set_timing(card->host, 1101a4924c71SGirish K S MMC_TIMING_MMC_HS200); 11022415c0efSSeungwon Jeon else 110389a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 110489a73cf5SPierre Ossman } 1105ef0b27d4SAdrian Hunter } 110689a73cf5SPierre Ossman 110789a73cf5SPierre Ossman /* 11087ea239d9SPierre Ossman * Compute bus speed. 11097ea239d9SPierre Ossman */ 11107ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 11117ea239d9SPierre Ossman 1112cdc99179SSeungwon Jeon if (mmc_card_hs(card) || mmc_card_hs200(card)) { 11137ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 11147ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 1115cdc99179SSeungwon Jeon if (mmc_card_hs(card) && (max_dtr > 52000000)) 1116ccb52a00SAl Cooper max_dtr = 52000000; 11177ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 11187ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 11197ea239d9SPierre Ossman } 11207ea239d9SPierre Ossman 11217ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 11227ea239d9SPierre Ossman 112389a73cf5SPierre Ossman /* 11240f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1125dfc13e84SHanumath Prasad */ 11262415c0efSSeungwon Jeon if (mmc_card_hs(card)) 11272415c0efSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 1128dfc13e84SHanumath Prasad 1129dfc13e84SHanumath Prasad /* 1130a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1131a4924c71SGirish K S */ 1132a4924c71SGirish K S if (mmc_card_hs200(card)) { 1133a4924c71SGirish K S u32 ext_csd_bits; 1134a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1135a4924c71SGirish K S 1136a4924c71SGirish K S /* 1137a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1138a4924c71SGirish K S * to be set before executing the tuning function. If 1139a4924c71SGirish K S * set before tuning, then device will respond with CRC 1140a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1141a4924c71SGirish K S * sequence will be 1142a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1143a4924c71SGirish K S * 2. switch to HS200 mode 1144a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1145a4924c71SGirish K S * 4. execute tuning for HS200 1146a4924c71SGirish K S */ 11472415c0efSSeungwon Jeon if (card->host->ops->execute_tuning) { 114852d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1149a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1150a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 115152d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 115252d0974eSSubhash Jadavani } 1153a4924c71SGirish K S if (err) { 1154a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1155a4924c71SGirish K S mmc_hostname(card->host)); 1156a4924c71SGirish K S goto err; 1157a4924c71SGirish K S } 1158a4924c71SGirish K S 1159a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1160a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 116160443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits); 116293fc5a47SSubhash Jadavani if (err) 116387f761b6SVenkatraman S pr_warning("%s: power class selection to bus width %d" 116487f761b6SVenkatraman S " failed\n", mmc_hostname(card->host), 116587f761b6SVenkatraman S 1 << bus_width); 1166a4924c71SGirish K S } 1167a4924c71SGirish K S 1168a4924c71SGirish K S /* 11690f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 117089a73cf5SPierre Ossman */ 1171a4924c71SGirish K S if (!mmc_card_hs200(card) && 11727488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1173b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 117422113efdSAries Lee static unsigned ext_csd_bits[][2] = { 117522113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 117622113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 117722113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 117822113efdSAries Lee }; 117922113efdSAries Lee static unsigned bus_widths[] = { 118022113efdSAries Lee MMC_BUS_WIDTH_8, 118122113efdSAries Lee MMC_BUS_WIDTH_4, 118222113efdSAries Lee MMC_BUS_WIDTH_1 118322113efdSAries Lee }; 118422113efdSAries Lee unsigned idx, bus_width = 0; 1185b30f8af3SJarkko Lavinen 118622113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 118722113efdSAries Lee idx = 0; 1188dfc13e84SHanumath Prasad else 118922113efdSAries Lee idx = 1; 119022113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 119122113efdSAries Lee bus_width = bus_widths[idx]; 119222113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 119322113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 119460443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits[idx][0]); 1195b87d8dbfSGirish K S if (err) 119687f761b6SVenkatraman S pr_warning("%s: power class selection to " 119787f761b6SVenkatraman S "bus width %d failed\n", 119887f761b6SVenkatraman S mmc_hostname(card->host), 119987f761b6SVenkatraman S 1 << bus_width); 1200b87d8dbfSGirish K S 120122113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 120222113efdSAries Lee EXT_CSD_BUS_WIDTH, 1203d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1204b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 120522113efdSAries Lee if (!err) { 12064c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 120708ee80ccSPhilip Rakity 120822113efdSAries Lee /* 120922113efdSAries Lee * If controller can't handle bus width test, 121008ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 121108ee80ccSPhilip Rakity * against ext_csd at new bus width 121222113efdSAries Lee */ 121322113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 121408ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 121508ee80ccSPhilip Rakity bus_width); 121608ee80ccSPhilip Rakity else 121722113efdSAries Lee err = mmc_bus_test(card, bus_width); 121822113efdSAries Lee if (!err) 121922113efdSAries Lee break; 122022113efdSAries Lee } 1221b30f8af3SJarkko Lavinen } 1222b30f8af3SJarkko Lavinen 122322113efdSAries Lee if (!err && ddr) { 122460443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits[idx][1]); 1225b87d8dbfSGirish K S if (err) 122687f761b6SVenkatraman S pr_warning("%s: power class selection to " 122787f761b6SVenkatraman S "bus width %d ddr %d failed\n", 122887f761b6SVenkatraman S mmc_hostname(card->host), 122987f761b6SVenkatraman S 1 << bus_width, ddr); 1230b87d8dbfSGirish K S 123189a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 123222113efdSAries Lee EXT_CSD_BUS_WIDTH, 1233d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1234b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 123522113efdSAries Lee } 1236ef0b27d4SAdrian Hunter if (err) { 1237a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1238ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 12390f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 124022113efdSAries Lee goto free_card; 124122113efdSAries Lee } else if (ddr) { 12424c4cb171SPhilip Rakity /* 12434c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 12444c4cb171SPhilip Rakity * signaling. 12454c4cb171SPhilip Rakity * 12464c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 12474c4cb171SPhilip Rakity * 12484c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 12494c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 12504c4cb171SPhilip Rakity * 12514c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 12524c4cb171SPhilip Rakity * working and no change to vccq is needed. 12534c4cb171SPhilip Rakity * 12544c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 12554c4cb171SPhilip Rakity */ 12562415c0efSSeungwon Jeon if (ddr & EXT_CSD_CARD_TYPE_DDR_1_2V) { 1257567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, 1258567c8903SJohan Rudholm MMC_SIGNAL_VOLTAGE_120); 12594c4cb171SPhilip Rakity if (err) 12604c4cb171SPhilip Rakity goto err; 12614c4cb171SPhilip Rakity } 126279f7ae7cSSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_DDR52); 12634c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 126489a73cf5SPierre Ossman } 1265ef0b27d4SAdrian Hunter } 126689a73cf5SPierre Ossman 1267881d1c25SSeungwon Jeon /* 126852d0974eSSubhash Jadavani * Enable HPI feature (if supported) 126952d0974eSSubhash Jadavani */ 127052d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 127152d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 127252d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 127352d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 127452d0974eSSubhash Jadavani if (err && err != -EBADMSG) 127552d0974eSSubhash Jadavani goto free_card; 127652d0974eSSubhash Jadavani if (err) { 127752d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 127852d0974eSSubhash Jadavani mmc_hostname(card->host)); 127952d0974eSSubhash Jadavani err = 0; 128052d0974eSSubhash Jadavani } else 128152d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 128252d0974eSSubhash Jadavani } 128352d0974eSSubhash Jadavani 128452d0974eSSubhash Jadavani /* 1285881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1286881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1287881d1c25SSeungwon Jeon */ 12887536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1289881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12908bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12918bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1292881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1293881d1c25SSeungwon Jeon goto free_card; 1294881d1c25SSeungwon Jeon 1295881d1c25SSeungwon Jeon /* 1296881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1297881d1c25SSeungwon Jeon */ 12988bc0678bSSeungwon Jeon if (err) { 12998bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 13008bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 13018bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 13028bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 13038bc0678bSSeungwon Jeon err = 0; 13048bc0678bSSeungwon Jeon } else { 13058bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 13068bc0678bSSeungwon Jeon } 1307881d1c25SSeungwon Jeon } 1308881d1c25SSeungwon Jeon 1309abd9ac14SSeungwon Jeon /* 1310abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1311abd9ac14SSeungwon Jeon * read: 5, write: 3 1312abd9ac14SSeungwon Jeon */ 1313abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1314abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1315abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1316abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1317abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1318abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1319abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1320abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1321abd9ac14SSeungwon Jeon goto free_card; 1322abd9ac14SSeungwon Jeon if (err) { 1323abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1324abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1325abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1326abd9ac14SSeungwon Jeon err = 0; 1327abd9ac14SSeungwon Jeon } else { 1328abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1329abd9ac14SSeungwon Jeon } 1330abd9ac14SSeungwon Jeon } 1331abd9ac14SSeungwon Jeon 13326abaa0c9SPierre Ossman if (!oldcard) 13337ea239d9SPierre Ossman host->card = card; 13347ea239d9SPierre Ossman 133508ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 133617b0429dSPierre Ossman return 0; 13376abaa0c9SPierre Ossman 13386abaa0c9SPierre Ossman free_card: 13396abaa0c9SPierre Ossman if (!oldcard) 13406abaa0c9SPierre Ossman mmc_remove_card(card); 13416abaa0c9SPierre Ossman err: 134208ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 13436abaa0c9SPierre Ossman 1344adf66a0dSPierre Ossman return err; 13456abaa0c9SPierre Ossman } 13466abaa0c9SPierre Ossman 134707a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 134807a68216SUlf Hansson { 134907a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 135007a68216SUlf Hansson } 135107a68216SUlf Hansson 135207a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 135307a68216SUlf Hansson { 135407a68216SUlf Hansson struct mmc_command cmd = {0}; 135507a68216SUlf Hansson struct mmc_card *card = host->card; 1356cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 135707a68216SUlf Hansson int err; 135807a68216SUlf Hansson 135907a68216SUlf Hansson err = mmc_deselect_cards(host); 136007a68216SUlf Hansson if (err) 136107a68216SUlf Hansson return err; 136207a68216SUlf Hansson 136307a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 136407a68216SUlf Hansson cmd.arg = card->rca << 16; 136507a68216SUlf Hansson cmd.arg |= 1 << 15; 136607a68216SUlf Hansson 1367cb962e04SUlf Hansson /* 1368cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1369cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1370cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1371cb962e04SUlf Hansson * response instead of a R1B. 1372cb962e04SUlf Hansson */ 1373cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1374cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1375cb962e04SUlf Hansson } else { 137607a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1377cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1378cb962e04SUlf Hansson } 1379cb962e04SUlf Hansson 138007a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 138107a68216SUlf Hansson if (err) 138207a68216SUlf Hansson return err; 138307a68216SUlf Hansson 138407a68216SUlf Hansson /* 138507a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 138607a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 138707a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 138807a68216SUlf Hansson * others) is invalid while the card sleeps. 138907a68216SUlf Hansson */ 1390cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1391cb962e04SUlf Hansson mmc_delay(timeout_ms); 139207a68216SUlf Hansson 139307a68216SUlf Hansson return err; 139407a68216SUlf Hansson } 139507a68216SUlf Hansson 1396e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1397e6c08586SUlf Hansson { 1398e6c08586SUlf Hansson return card && 1399e6c08586SUlf Hansson mmc_card_mmc(card) && 1400e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1401e6c08586SUlf Hansson } 1402e6c08586SUlf Hansson 1403e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1404e6c08586SUlf Hansson { 1405e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1406e6c08586SUlf Hansson int err; 1407e6c08586SUlf Hansson 1408e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1409e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1410e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1411e6c08586SUlf Hansson 1412878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1413e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 14144509f847SUlf Hansson notify_type, timeout, true, false, false); 1415e6c08586SUlf Hansson if (err) 1416e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1417e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1418e6c08586SUlf Hansson 1419e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1420e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1421e6c08586SUlf Hansson 1422e6c08586SUlf Hansson return err; 1423e6c08586SUlf Hansson } 1424e6c08586SUlf Hansson 14256abaa0c9SPierre Ossman /* 14266abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 14276abaa0c9SPierre Ossman */ 14286abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 14296abaa0c9SPierre Ossman { 14306abaa0c9SPierre Ossman BUG_ON(!host); 14316abaa0c9SPierre Ossman BUG_ON(!host->card); 14326abaa0c9SPierre Ossman 14336abaa0c9SPierre Ossman mmc_remove_card(host->card); 14346abaa0c9SPierre Ossman host->card = NULL; 14356abaa0c9SPierre Ossman } 14366abaa0c9SPierre Ossman 14376abaa0c9SPierre Ossman /* 1438d3049504SAdrian Hunter * Card detection - card is alive. 1439d3049504SAdrian Hunter */ 1440d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1441d3049504SAdrian Hunter { 1442d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1443d3049504SAdrian Hunter } 1444d3049504SAdrian Hunter 1445d3049504SAdrian Hunter /* 14466abaa0c9SPierre Ossman * Card detection callback from host. 14476abaa0c9SPierre Ossman */ 14486abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 14496abaa0c9SPierre Ossman { 14506abaa0c9SPierre Ossman int err; 14516abaa0c9SPierre Ossman 14526abaa0c9SPierre Ossman BUG_ON(!host); 14536abaa0c9SPierre Ossman BUG_ON(!host->card); 14546abaa0c9SPierre Ossman 1455e94cfef6SUlf Hansson mmc_get_card(host->card); 14566abaa0c9SPierre Ossman 14576abaa0c9SPierre Ossman /* 14586abaa0c9SPierre Ossman * Just check if our card has been removed. 14596abaa0c9SPierre Ossman */ 1460d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 14616abaa0c9SPierre Ossman 1462e94cfef6SUlf Hansson mmc_put_card(host->card); 14637ea239d9SPierre Ossman 146417b0429dSPierre Ossman if (err) { 14654101c16aSPierre Ossman mmc_remove(host); 14666abaa0c9SPierre Ossman 14676abaa0c9SPierre Ossman mmc_claim_host(host); 14686abaa0c9SPierre Ossman mmc_detach_bus(host); 14697f7e4129SUlf Hansson mmc_power_off(host); 14706abaa0c9SPierre Ossman mmc_release_host(host); 14716abaa0c9SPierre Ossman } 14726abaa0c9SPierre Ossman } 14736abaa0c9SPierre Ossman 147403d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 14756abaa0c9SPierre Ossman { 1476c3805467SBalaji T K int err = 0; 147703d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 147803d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1479c3805467SBalaji T K 14806abaa0c9SPierre Ossman BUG_ON(!host); 14816abaa0c9SPierre Ossman BUG_ON(!host->card); 14826abaa0c9SPierre Ossman 14836abaa0c9SPierre Ossman mmc_claim_host(host); 1484881d926dSMaya Erez 14859ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 14869ec775f7SUlf Hansson goto out; 14879ec775f7SUlf Hansson 148839b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 148939b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 149039b9431bSUlf Hansson if (err) 149139b9431bSUlf Hansson goto out; 149239b9431bSUlf Hansson } 149339b9431bSUlf Hansson 149410e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1495881d926dSMaya Erez if (err) 1496881d926dSMaya Erez goto out; 1497881d926dSMaya Erez 149843235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 149953275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 150003d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 150107a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 150207a68216SUlf Hansson err = mmc_sleep(host); 1503e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 150485e727edSJaehoon Chung err = mmc_deselect_cards(host); 150595cdfb72SNicolas Pitre 15069ec775f7SUlf Hansson if (!err) { 150774590263SUlf Hansson mmc_power_off(host); 15089ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 15099ec775f7SUlf Hansson } 1510881d926dSMaya Erez out: 1511881d926dSMaya Erez mmc_release_host(host); 1512c3805467SBalaji T K return err; 15136abaa0c9SPierre Ossman } 15146abaa0c9SPierre Ossman 15156abaa0c9SPierre Ossman /* 15160cb403a2SUlf Hansson * Suspend callback 151703d071fcSUlf Hansson */ 151803d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 151903d071fcSUlf Hansson { 15200cb403a2SUlf Hansson int err; 15210cb403a2SUlf Hansson 15220cb403a2SUlf Hansson err = _mmc_suspend(host, true); 15230cb403a2SUlf Hansson if (!err) { 15240cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 15250cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 15260cb403a2SUlf Hansson } 15270cb403a2SUlf Hansson 15280cb403a2SUlf Hansson return err; 152903d071fcSUlf Hansson } 153003d071fcSUlf Hansson 153103d071fcSUlf Hansson /* 15326abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 15336abaa0c9SPierre Ossman * and, if so, restore all state to it. 15346abaa0c9SPierre Ossman */ 15350cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 15366abaa0c9SPierre Ossman { 15379ec775f7SUlf Hansson int err = 0; 15386abaa0c9SPierre Ossman 15396abaa0c9SPierre Ossman BUG_ON(!host); 15406abaa0c9SPierre Ossman BUG_ON(!host->card); 15416abaa0c9SPierre Ossman 15426abaa0c9SPierre Ossman mmc_claim_host(host); 15439ec775f7SUlf Hansson 15449ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 15459ec775f7SUlf Hansson goto out; 15469ec775f7SUlf Hansson 154769041150SUlf Hansson mmc_power_up(host, host->card->ocr); 154869041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 15499ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 15502986d0bfSPierre Ossman 15519ec775f7SUlf Hansson out: 15529ec775f7SUlf Hansson mmc_release_host(host); 155395cdfb72SNicolas Pitre return err; 15546abaa0c9SPierre Ossman } 15556abaa0c9SPierre Ossman 15569ec775f7SUlf Hansson /* 15579ec775f7SUlf Hansson * Shutdown callback 15589ec775f7SUlf Hansson */ 15599ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 15609ec775f7SUlf Hansson { 15619ec775f7SUlf Hansson int err = 0; 15629ec775f7SUlf Hansson 15639ec775f7SUlf Hansson /* 15649ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 15659ec775f7SUlf Hansson * before we can shutdown it properly. 15669ec775f7SUlf Hansson */ 15679ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 15689ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 15690cb403a2SUlf Hansson err = _mmc_resume(host); 15709ec775f7SUlf Hansson 15719ec775f7SUlf Hansson if (!err) 15729ec775f7SUlf Hansson err = _mmc_suspend(host, false); 15739ec775f7SUlf Hansson 15749ec775f7SUlf Hansson return err; 15759ec775f7SUlf Hansson } 1576c4d770d7SUlf Hansson 1577c4d770d7SUlf Hansson /* 15780cb403a2SUlf Hansson * Callback for resume. 15790cb403a2SUlf Hansson */ 15800cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 15810cb403a2SUlf Hansson { 15824d223782SUlf Hansson int err = 0; 15830cb403a2SUlf Hansson 15844d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 15850cb403a2SUlf Hansson err = _mmc_resume(host); 15860cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 15870cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 15884d223782SUlf Hansson } 15890cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 15900cb403a2SUlf Hansson 15910cb403a2SUlf Hansson return err; 15920cb403a2SUlf Hansson } 15930cb403a2SUlf Hansson 15940cb403a2SUlf Hansson /* 1595c4d770d7SUlf Hansson * Callback for runtime_suspend. 1596c4d770d7SUlf Hansson */ 1597c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1598c4d770d7SUlf Hansson { 1599c4d770d7SUlf Hansson int err; 1600c4d770d7SUlf Hansson 1601c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1602c4d770d7SUlf Hansson return 0; 1603c4d770d7SUlf Hansson 16040cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16050cc81a8cSUlf Hansson if (err) 1606c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1607c4d770d7SUlf Hansson mmc_hostname(host), err); 1608c4d770d7SUlf Hansson 1609c4d770d7SUlf Hansson return err; 1610c4d770d7SUlf Hansson } 1611c4d770d7SUlf Hansson 1612c4d770d7SUlf Hansson /* 1613c4d770d7SUlf Hansson * Callback for runtime_resume. 1614c4d770d7SUlf Hansson */ 1615c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1616c4d770d7SUlf Hansson { 1617c4d770d7SUlf Hansson int err; 1618c4d770d7SUlf Hansson 16194d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1620c4d770d7SUlf Hansson return 0; 1621c4d770d7SUlf Hansson 16220cb403a2SUlf Hansson err = _mmc_resume(host); 1623c4d770d7SUlf Hansson if (err) 1624c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1625c4d770d7SUlf Hansson mmc_hostname(host), err); 1626c4d770d7SUlf Hansson 1627c4d770d7SUlf Hansson return 0; 1628c4d770d7SUlf Hansson } 1629c4d770d7SUlf Hansson 163012ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1631eae1aeeeSAdrian Hunter { 163212ae637fSOhad Ben-Cohen int ret; 163312ae637fSOhad Ben-Cohen 1634eae1aeeeSAdrian Hunter mmc_claim_host(host); 163569041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1636eae1aeeeSAdrian Hunter mmc_release_host(host); 163712ae637fSOhad Ben-Cohen 163812ae637fSOhad Ben-Cohen return ret; 1639eae1aeeeSAdrian Hunter } 1640eae1aeeeSAdrian Hunter 16419feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 16429feae246SAdrian Hunter .remove = mmc_remove, 16439feae246SAdrian Hunter .detect = mmc_detect, 16449feae246SAdrian Hunter .suspend = mmc_suspend, 16459feae246SAdrian Hunter .resume = mmc_resume, 1646c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1647c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1648eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1649d3049504SAdrian Hunter .alive = mmc_alive, 1650486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 16519feae246SAdrian Hunter }; 16529feae246SAdrian Hunter 16536abaa0c9SPierre Ossman /* 16546abaa0c9SPierre Ossman * Starting point for MMC card init. 16556abaa0c9SPierre Ossman */ 1656807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 16576abaa0c9SPierre Ossman { 16586abaa0c9SPierre Ossman int err; 165969041150SUlf Hansson u32 ocr, rocr; 16606abaa0c9SPierre Ossman 16616abaa0c9SPierre Ossman BUG_ON(!host); 1662d84075c8SPierre Ossman WARN_ON(!host->claimed); 16636abaa0c9SPierre Ossman 166444669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 166544669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 166644669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 166744669034SStefan Nilsson XK 1668807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1669807e8e40SAndy Ross if (err) 1670807e8e40SAndy Ross return err; 1671807e8e40SAndy Ross 16722501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 16738f230f45STakashi Iwai if (host->ocr_avail_mmc) 16748f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 16756abaa0c9SPierre Ossman 16766abaa0c9SPierre Ossman /* 1677af517150SDavid Brownell * We need to get OCR a different way for SPI. 1678af517150SDavid Brownell */ 1679af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1680af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1681af517150SDavid Brownell if (err) 1682af517150SDavid Brownell goto err; 1683af517150SDavid Brownell } 1684af517150SDavid Brownell 168569041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 16866abaa0c9SPierre Ossman 16876abaa0c9SPierre Ossman /* 16886abaa0c9SPierre Ossman * Can we support the voltage of the card? 16896abaa0c9SPierre Ossman */ 169069041150SUlf Hansson if (!rocr) { 1691109b5bedSPierre Ossman err = -EINVAL; 16926abaa0c9SPierre Ossman goto err; 1693109b5bedSPierre Ossman } 16946abaa0c9SPierre Ossman 16956abaa0c9SPierre Ossman /* 16966abaa0c9SPierre Ossman * Detect and init the card. 16976abaa0c9SPierre Ossman */ 169869041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 169917b0429dSPierre Ossman if (err) 17006abaa0c9SPierre Ossman goto err; 17016abaa0c9SPierre Ossman 17026abaa0c9SPierre Ossman mmc_release_host(host); 17034101c16aSPierre Ossman err = mmc_add_card(host->card); 1704807e8e40SAndy Ross mmc_claim_host(host); 17057ea239d9SPierre Ossman if (err) 17062986d0bfSPierre Ossman goto remove_card; 17077ea239d9SPierre Ossman 17087ea239d9SPierre Ossman return 0; 17097ea239d9SPierre Ossman 17102986d0bfSPierre Ossman remove_card: 1711807e8e40SAndy Ross mmc_release_host(host); 17126abaa0c9SPierre Ossman mmc_remove_card(host->card); 17132986d0bfSPierre Ossman mmc_claim_host(host); 1714807e8e40SAndy Ross host->card = NULL; 17157ea239d9SPierre Ossman err: 17167ea239d9SPierre Ossman mmc_detach_bus(host); 17177ea239d9SPierre Ossman 1718a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1719109b5bedSPierre Ossman mmc_hostname(host), err); 1720109b5bedSPierre Ossman 1721adf66a0dSPierre Ossman return err; 17227ea239d9SPierre Ossman } 1723